RDMA/qedr: Don't reset QP when queues aren't flushed

[ Upstream commit 933e6dcaa0f65eb2f624ad760274020874a1f35e ]

Fail QP state transition from error to reset if SQ/RQ are not empty
and still in the process of flushing out the queued work entries.

Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index b78e37e..4e3e157 100644 (file)
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -1729,6 +1729,14 @@ static int qedr_update_qp_state(struct qedr_dev *dev,
                /* ERR->XXX */
                switch (new_state) {
                case QED_ROCE_QP_STATE_RESET:
+                       if ((qp->rq.prod != qp->rq.cons) ||
+                           (qp->sq.prod != qp->sq.cons)) {
+                               DP_NOTICE(dev,
+                                         "Error->Reset with rq/sq not empty rq.prod=%x rq.cons=%x sq.prod=%x sq.cons=%x\n",
+                                         qp->rq.prod, qp->rq.cons, qp->sq.prod,
+                                         qp->sq.cons);
+                               status = -EINVAL;
+                       }
                        break;
                default:
                        status = -EINVAL;